Voltage Negative Switch Box

Consistent, Controlled Electrical Performance 

The Voltage Negative Switch Box is engineered to provide safe, stable electrical switching for Lewmar bow and stern thruster systems. Designed as an essential accessory for both sail and power vessels, it supports secure thruster operation under varying onboard voltage conditions. This switch box enables the safe use of higher-voltage thrusters on lower-voltage boats, ensuring smooth and predictable thruster response when manoeuvring in tight spaces. It supports both positive and negative switching configurations.

Durable, Marine-Grade Construction

Constructed to withstand harsh marine environments, the Voltage Negative Switch Box offers long-lasting reliability. Its robust housing and internal components are built to handle continuous exposure to vibration, moisture, and electrical load, ensuring dependable operation season after season.

Efficient, Low-Noise Electrical Management

By manging thruster switching internally, the unit helps maintain efficient performance and smoother thruster operation. This contributes to quieter, more controlled handling during delicate docking or low-speed manoeuvres where precision matters.

Easy Installation & Thruster Compatibility

Designed for seamless use with Lewmar single and dual controllers, the switch box installs cleanly into existing thruster setups. It pairs with multiple Lewmar voltage configurations and may require additional batteries depending on the thruster model and voltage requirements.